/Engine/Source/Runtime/Interchange/Core/Public/Nodes/InterchangeUserDefinedAttribute.h
Remove the specified user defined attribute param UserDefinedAttributeName - The name of the user defined attribute to remove return - True if the attribute exist and was remove or if the attribute doesn't exist. Return false if the attribute exist but the attribute was not properly remove. note - User defined attributes are the DCC translated node user custom attributes (i.e. Maya extra attributes) Payload key will point on aFRichCurvepayload.
static bool RemoveUserDefinedAttribute ( [UInterchangeBaseNode](API\Runtime\InterchangeCore\Nodes\UInterchangeBaseNode) * InterchangeNode, const [FString](API\Runtime\Core\Containers\FString) & UserDefinedAttributeName )